Fermiology of the organic superconductor β"-(ET)2SF5CH2CF2SO3

被引：23
|
作者：
Wosnitza, J
Wanka, S
Qualls, JS
Brooks, JS
Mielke, CH
Harrison, N
Schlueter, JA
Williams, JM
Nixon, PG
Winter, RW
Gard, GL
机构：
[1] Univ Karlsruhe, Inst Phys, D-76128 Karlsruhe, Germany
[2] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA
[3] LANL, Natl High Magent Field Lab, Los Alamos, NM 87545 USA
[4] Argonne Natl Lab, Div Chem & Mat Sci, Argonne, IL 60439 USA
[5] Portland State Univ, Dept Chem, Portland, OR 97207 USA
来源：
SYNTHETIC METALS | 1999年 / 103卷 / 1-3期
关键词：
organic superconductors; magnetic measurements; transport measurements;
D O I：
10.1016/S0379-6779(98)00920-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a detailed Fermi-surface (FS) investigation of the quasi two-dimensional (2D) organic superconductor (T-c = 4.5 K) beta "-(ET)(2)SF5CH2CF2SO3. In line with previous investigations, de Haas-van Alphen measurements in pulsed fields up to 60 T show a single oscillation frequency, F-0 = 200 T, which corresponds to a FS size of about 5% of the first Brillouin zone. Angular dependent magnetoresistance oscillations (AMROs) are utilized for the exact determination of the in-plane FS, which is found to be a strongly elongated ellipsoid with an axes ratio of about 1:9. Transport measurements in static fields up to 33 T show an unusual temperature dependence of the Shubnikov-de Haas (SdH) signal, i.e., a decrease of the SdH amplitude with decreasing temperature.
引用
收藏
页码：2000 / 2001
页数：2
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